Array Configuration Utility User Guide

Using the Command Line Interface 54
Enabling or disabling the array accelerator
If the controller has an array accelerator, you can disable it or re-enable it for specified logical drives.
NOTE: Disabling the array accelerator for a logical drive reserves use of the accelerator cache for other
logical drives on the array. This feature is useful if you want the other logical drives to have the maximum
possible performance (for example, if the logical drives contain database information).
Syntax:
<target> modify aa=enable|disable
where <target> is a logical drive.
Example command:
=> ctrl slot=3 ld 1 modify aa=enable
Disabling a redundant controller
This command disables a redundant controller that is in an Active-Standby configuration.
IMPORTANT: The redundant controller cannot be re-enabled after you have disabled it.
Syntax:
<target> modify redundantcontroller=disable
where <target> is a controller that has an enabled redundant controller.
Example command:
=> ctrl ch="redundant Lab4" modify rc=disable
Setting the target
If you must perform several operations on a given target device, you can simplify the required commands
by setting the device as the default <target> for the CLI operations.
After you have set the target, any command that you enter in the CLI without a specified <target> is
automatically applied to the set target. If you must also perform operations on other devices, you can still
do so at any time by specifying the <target> for each of those operations as usual. You can also
change the set target or clear it completely. The set target is automatically cleared when you close the CLI.
IMPORTANT: You cannot use the set target command in batch file scripts.
Syntax:
set target <target>
where <target> is a controller, array, or logical drive.
Example commands:
=> set target ctrl slot=3
=> clear target
Typical scenario
First, set a target as follows:
=> set target ctrl ch="Lab 4"
=> show target
controller chassisname="Lab 4"
As an example of how the set target command works, check the status of array A on this controller:
=> array A show
MSA1000 at Lab 4